Horizontal coke oven with variable burners along the flue length

ABSTRACT

1. In a horizontal coke oven battery having a plurality of transversely extending coke oven chambers increasing in width from the pusher side of the coke oven battery to the coke side of the coke oven battery comprising, a transversely extending heating wall between a pair of said coke oven chambers, said heating wall having a plurality of vertical heating flues extending from said coke oven battery pusher side to said coke oven battery coke side, said vertical heating flues adjacent said pusher side of said coke oven battery having base portions with parallel flow burners therein, said parallel flow burners having separate passageways extending therethrough for separately introducing combustion gas and air into the flues so that said combustion gas and air are admixed in the flues to provide a relatively elongated flame, and said vertical heating flues adjacent said coke side of said coke oven having base portions with mixing jet burners therein, said mixing jet burners having separate passageways for separately introducing combustion gas and air into said burner, said mixing jet burners having a chamber therein, said passageways opening into said chamber so that combustion gas and air are premixed in said chamber within the burner and ignited adjacent the base portion of the flue to provide a relatively shorter flame than the flame produced in said flues having parallel flow burners.

0a. 15, 1914 JAKOE ETAL 3,841,975

HORIZONTAL COKE OVEN WITH VARIABLE BUBNERS ALONG THE FLUE LENGTH I FiledOct. 26, 1972 \&

US. Cl. 202-439 6 Claims ABSTRACT OF THE DISCLOSURE A horizontal cokeoven battery has a plurality of parallel spaced coke oven chambers withheating flues positioned therebetween. The coke oven chambers aretapered and increase in width from the pusher side to the coke side toaccommodate pushing of the finished coke charge from the cokingchambers. The flues increase in width from the coke side of the cokeoven battery to the pusher side of the coke oven battery and the fluesare provided with different types of burners adjacent the pusher side ofthe battery as compared with the burners adjacent the coke side of thebattery. Adjacent the pusher side of the battery the flues have parallelflow burners in which the air and combustion gases admix at a locationabove the top of the burner to provide a relatively long flame in theheating flues. On the coke side of the oven mixing jet type burners areprovided where the fuel and air are premixed within the burner and asthe admixture flows out of the burner it is immediately ignited at thetop of the burner and provides a shorter flame.

BACKGROUND OF THE INVENTION 1. Field of the Invention This inventionrelates to a horizontal coke oven battery with oven chambers increasingin width from the pusher side to the coke side of the coke oven batteryand more particularly to a horizontal coke oven battery having heatingWalls increasing in width from the coke side to the pusher side of thecoke oven battery with different types of burners therein to provideuniform heating of the coke oven chambers.

2. Description of the Prior Art As is illustrated and described inUnited States Patent 2,100,762, the coke oven chambers of horizontalcoke oven batteries increase in width from the pusher side to the cokeside of the coke oven battery. This increase in width makes it possibleto push the coke from the coke oven chamber after the coking process iscompleted. The increasing width of the coke oven chamber results in aproportionate increase in the volume of coal charge at every heatingflue from the pusher side to the coke side of the oven and,consequently, increases the heating requirement in each flue from thepusher side to the coke side of the oven. The heating walls on oppositesides of the coke oven chamber have vertical flues therein that decreasein width from the pusher side of the coke oven battery to the coke sideof the coke oven battery which is in opposition to the progressivelyincreasing heat requirement for the increasing volume of coal to becoked at each heating flue.

To compensate for the increasing heat requirement toward the coke side,it has been the practice in the past to increase the supply of fuel tothe individual heating flues progressively from the pusher side of thecoke oven battery to the coke side of the coke oven battery. In thepast, the same type burners were used in all heating flues United StatesPatent 3,841,975 Patented Oct. 15, 1974 of the heating Wall, with theresult that the flames in the vertical flues adjacent the pusher side ofthe coke oven battery were relatively short and longer flames werepresent on the coke side as the result of the varying amounts of fuelsupplied to the respective heating flues. It is desirable to provideequally long flames in all of the heating flues for a uniform verticaldistribution of the heat through the heating walls to the coke charge.

As is discussed in United States Patent 2,100,762, the area of the airand gas regenerator ports in the vertical heating flues progressivelydecrease in cross section from the pusher side of the coke oven batteryto the coke side of the coke oven battery. With this arrangement, it isstated that a relatively uniform heating of the coal charge in theadjoining chambers is obtained. The decrease in the size of the combinedair and gas ports Would inherently change the length of the flame withinthe vertical flue and thereby change the vertical distribution of theheat transferred through the heating walls to the adjacent coke ovenchambers. There is a need for providing both uniform heat from all ofthe vertical heating flues to the coke chamber and to uniformlydistribute the heat vertically in the heating flues.

SUMARY OF THE INVENTION The present invention is directed primarily toimprovements in vertical heating flues to provide uniform vertical heatdistribution and uniform heating throughout the length of the heatingWall and includes parallel flow burners in the vertical flues of theheating Wall adjacent the pusher side of the coke oven battery andmixing jet burners in the vertical flues adjacent the coke side of thecoke oven battery. The parallel flow burners provide an elongated orextended fiarne in the vertical flues of large cross section withrelatively small amounts of fuel. The mixing jet burners adjacent thecoke side of the coke oven provide a relatively short flame in theheating flues of smaller cross section and utilize larger amounts offuel. The uniformity of heating throughout the length of the heatingwall can be obtained by providing similar parallel flow burners in onehalf of the heating wall beginning at the pusher side of the coke ovenbattery and providing mixing said burners in the other half of theheating wall beginning at the coke oven side of the coke oven battery.With this arrangement, a substantial adjustment in the flame length canbe obtained. Where a more uniform flame length is desired, a series ofburners may be provided that progress from the pusher side to the cokeside of the coke oven battery.

Accordingly, the principal object of this invention is to provide aheating wall for a coke oven chamber in which the heat is uniformlydistributed throughout the length of the heating wall.

Another object of this invention is to provide different type burners inthe vertical heating flues between the pusher side and the coke side ofthe coke oven battery to provide substantially uniform heatingthroughout the length of the heating wall and provide substantiallyuniform vertical heat distribution through the heating wall.

These and other objects of this invention will be more completely:lisclosed and described in the following specification, theaccompanying drawings and the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a fragmentary verticalsection through the base of a heating wall illustrating the parallelflow type burner.

FIG. 2 is a fragmentary vertical section through the base of a heatingwall illustrating a mixing jet burner.

To simplify the illustrations, only those components of the coke ovenbattery are illustrated which are essential to the understanding of theinvention. United States Patent 2,100,762 describes and illustrates indetail a horizontal coke oven battery with the plurality of transverselyextending coke oven chambers that increase in width from the pusher sideof the coke oven battery to the coke side of the coke oven battery andthe heating walls between the coke oven chambers. The separate fines inthe heating walls with burners located in the base portion of each flueare also illustrated and described in detail in United States Patent2,100,762. The description of US. Patent 2,100,762 is incorporatedherein by reference and only the parallel flow and mixed jet typeburners in the respective fines will be described herein.

DESCRIPTION OF THE PREFERREd EMBODIMENTS Referring to the drawings, andparticularly FIGS. 1 and 2, there is illustrated a pair of coke ovenchambers and 12 with a heating wall 14 therebetween. The heat ing wall14 has a plurality of vertical lines 16 with side walls 18 and 20.Transverse dividing walls 22 form the separate vertical flues 16 in theheating wall 14. The fines 16 have a base portion 24 with a burner 26that extends upwardly into the fines 16. The burner 26 has an uppersurface 28 and a chamber 30 therein. A web member 32 extendslongitudinally in the burner chamber 30' forming a pair of separateducts or passageways 34 and 36 through which fuel gas and air areintroduced into the burner for combustion. Bricks 38 and 40 are providedto control the opening 42 in the burner upper surface 28.

In the parallel flow burner illustrated in FIG. 1, the web 32 has anupper portion 44 that extends upwardly through the burner opening 42beyond the burner upper surface 28. With this arrangement, the air andfuel gas introduced through the ducts 34 and 36 flow separately throughthe burner 26 into the heating flue 16 and are first mixed in thevertical flue 16. After sufficient mixing of the air and fuel gas hastaken place, the m'urture ignites and burns. The continued mixing of theair and fuel gas in the vertical flue results in a relatively elongatedflame. The delayed mixing of the air and fuel in the vertical flueprolongs the combustion of the vertically rising gases to provide thedesired elongated flame.

In the mixing jet burner, as illustrated in FIG. 2, the upper edgeportion 44 of the web 32 terminates at a location below the tip or uppersurface 28 of burner 26. Between the upper edge 44 of web 32 and theburner upper surface 28 there is provided a mixing chamber 30a in whichthe air and fuel gas flowing through ducts 34 and 36 are premixed beforebeing introduced into the vertical flue 16 through the burner outlet 42.The web upper edge 44 is generally pointed, as illustrated in FIG. 2,and the bricks 38 and 40 have curved sides 46 and 48 to provide aconical configuration to chamber 30a. The conical configuration assistsin the mixing of the air and fuel gas within the chamber 30a of burner'26. The premixed fuel gas and air is ignited at the top surface of theburner 16 and provides a shorter flame. The shorter flame is due to thepremixing of the combustion media in the chamber 30a within the burner26 before the combustion media is introduced into the vertical fine.

The parallel flow burners of FIG. 1 may be installed in all of theheating fines on the heating wall half toward the pusher side of thecoke oven battery, and the mixing jet burners illustrated in FIG. 2 canbe installed in all of the heating fines of the heating wall half towardthe coke side of the coke oven battery. It is also possible to attainthe above discussed uniformity of heating throughout the length of theheating wall by providing a series of burners in the flnes that progressfrom a mixing jet type burner of FIG. 2. to the parallel flow typeburner of FIG. 1. The progressive change in the burners could beeffected by lowering the upper edge 44 of web 32 from the heightindicated in FIG. 1 stepwise to the height of the web illustrated inFIG. 2. The conical taper of the bricks 3'8 and 4 40 may also be changedprogressively from that illlustrated in FIG. 1 to that illustrated inFIG. 2.

According to the provisions of the patent statutes, we have explainedthe principle, preferred construction and mode of operation of ourinvention and have illustrated and described what we now consider torepresent its best embodiments.

We claim:

1. In a horizontal coke oven battery having a plurality of transverselyextending coke oven chambers increasing in width from the pusher side ofthe coke oven battery to the coke side of the coke oven batterycomprising,

a transversely extending heating Wall between a pair of said coke ovenchambers, said heating wall having a plurality of vertical heating fluesextending from said coke oven battery pusher side to said coke ovenbattery coke side,

said vertical heating flues adjacent said pusher side of said coke ovenbattery having base portions with parallel flow burners therein, saidparallel flow burners having separate passageways extending therethroughfor separately introducing combustion gas and air into the flues so thatsaid combustion gas and air are admixed in the tines to provide arelatively elongated flame, and

said vertical heating fines adjacent said coke side of said coke ovenhaving base portions with mixing jet burners therein, said mixing jetburners having separate passageways for separately introducingcombustion gas and air into said burner, said mixing jet burners havinga chamber therein, said passageways opening into said chamber so thatcombustion gas and air are premixed in said chamber within the burnerand ignited adjacent the base portion of the flue to provide arelatively shorter flame than the flame produced in said flues havingparallel flow burners.

2. In a horizontal coke oven battery as set forth in claim 1 in which,

said heating fines having parallel flow burners therein extend from thepusher side of the coke oven battery to a location intermediate saidcoke side and said pusher side of said coke oven battery, and

the remaining fines having mixing type jet burners.

3. In a horizontal coke oven battery as set forth in claim 1 in whichsaid vertical flues having said parallel flow burners include,

a burner positioned adjacent said flue base portion, said burner havinga chamber therein with an upper surface, said upper surface having a gasflow outlet therein opening into said chamber, and

a web member extending across said chamber and dividing said chamberinto said separate passageways, said web member extending upwardlythrough said gas flow outlet to a location above the upper horizontalsurface of said burner so that separate combustion gases flowing throughsaid passageways mix externally of said burner.

4. In a horizontal coke oven battery as set forth in claim 1 in whichsaid vertical fines having said jet mixing burners therein include,

a burner positioned adjacent said flue base portion, said burner havinga chamber with an upper surface, said upper surface having a gas flowoutlet therein opening into said chamber,

a web member positioned in said chamber and forming said separatepassageways therein, the upper portion of said web member terminatingwithin said chamber below the upper surface of said burner so thatseparate combustion gases flowing through said passageway mix in saidchamber within said burner.

5. In a horizontal coke oven battery as set forth in claim 4 in which,

said chamber within said burner having a generally conicalconfiguration.

5 6 6. In a horizontal coke oven battery as set forth in 933,993 9/1909Koppers 202-139 claim l'in which, 2,488,175 11/1949 Davis 202-151 saidburners in said fiues progressing from said pusher 3,431,178 3/1969Schiin 202-151 side of said coke oven battery to said coke side of saidbattery having a web member with an upper 5 FOREIGN PA:IE NTS edgeportion increasing progressively in elevation 308,120 3/ 1929 GreatBrltaln 202-439 from a location above the upper surface of the burn-1,251,709 3/ 1960 France er to a location below the upper surface of the492,735 2/1930 Gfirmany b NORMAN YUDKOFF, Primary Examiner ReferencesCited 10 UNITED STATES PATENTS 2,839,453 6/1958 Becker 202-143 D.SANDERS, Assistant Examiner

1. In a horizontal coke oven battery having a plurality of transverselyextending coke oven chambers increasing in width from the pusher side ofthe coke oven battery to the coke side of the coke oven batterycomprising, a transversely extending heating wall between a pair of saidcoke oven chambers, said heating wall having a plurality of verticalheating flues extending from said coke oven battery pusher side to saidcoke oven battery coke side, said vertical heating flues adjacent saidpusher side of said coke oven battery having base portions with parallelflow burners therein, said parallel flow burners having separatepassageways extending therethrough for separately introducing combustiongas and air into the flues so that said combustion gas and air areadmixed in the flues to provide a relatively elongated flame, and saidvertical heating flues adjacent said coke side of said coke oven havingbase portions with mixing jet burners therein, said mixing jet burnershaving separate passageways for separately introducing combustion gasand air into said burner, said mixing jet burners having a chambertherein, said passageways opening into said chamber so that combustiongas and air are premixed in said chamber within the burner and ignitedadjacent the base portion of the flue to provide a relatively shorterflame than the flame produced in said flues having parallel flowburners.